DoubleStar AR-15 Standard Bolt Carrier Group With O-Ring AR100

DoubleStar – AR-15 Bolt Carrier Group

Complete bolt-and-carrier group easily drops into a standard Mil-Spec AR-15 upper, and it’s ready to shoot. The bolt assembly contains the correct black insert and tool steel extractor. The bolt is MPI (Magnetic Particle Inspected) and HPT (High Pressure Tested) material batch tested, to ensure high quality and longevity. Bolt and carrier feature a matte black phosphate finish that resists heat, wear and corrosion. Carrier is chrome lined and has a staked gas key attached.

Features and Specifications:
Manufacturer Number: AR100
Made from Carpenter 158 steel
Batch MPI and HPT tested bolt
Matte black phosphate finish bolt and carrier
Chrome lined Carrier with staked gas key attached

Includes:
Bolt assembly
Firing pin
Firing pin
Retaining pin
Cam pin
Complete carrier